In August of 2007 the United States Postal Service began requiring that all CASS Certified™ postal coding solutions perform LACS (Locatable Address Conversion System)Link processing as part of CASS processing. PER/LLK is the module that adds LACSLink™functionality to PER/ZIP4. PER/LLK is automatically installed with PER/ZIP4 and cannot be bypassed or disabled.
Since the mid 1980s, the Enhanced 911 emergency response system has required the conversion of rural route-style addresses to city-style street names across the country. E-911 automatically associates a physical address with the telephone number from which an emergency call is made so that authorities can respond faster.
LACSLink data and technology enables PER/ZIP4 to automatically update mailer’s rural-style addresses with new, locatable city-style addresses in areas that are conducting E-911 emergency response address conversions. The LACSLink data currently contains over five million converted addresses. The LACSLink technology maintains the privacy and security of the data while allowing the access needed to convert outdated addresses.
LACSLink processing is performed by all three PER/ZIP4 interfaces; Interactive, Callable Program (API), and Batch.
While using the PER/ZIP4 interactive interface, if LACSLink processing results in the conversion of an address, the message Address LACS-Link converted will appear at the bottom of the screen.
Callable Program (API) Interface
While using the PER/ZIP4 callable program interface, if LACSLink processing results in the conversion of an address, the converted (new) address will be returned and the informational code “LLK” will appear in the error code (ECOD##) field.
While using the PER/ZIP4 batch interface, if LACSLink processing results in the conversion of an address, the address will appear on the PER/ZIP4 Coding Report with an “LLK” informational code. This informational code will appear for each address that is LACSLink converted.